2 C Rhubarb, finely chopped
2 C Onion, finely chopped
2-1/2 C Brown sugar, packed
2 C Vinegar
1 tsp Salt
1/2 tsp Ground cinnamon
1/2 tsp Ground cloves
1/4 tsp Pepper
Combine all ingredients in a saucepan. Cover over medium heat for 30 minutes or until thick. Stir occasionally. Cool and store in refrigerator.